1251413255003 has 4 divisors (see below), whose sum is σ = 1294565436240. Its totient is φ = 1208261073768.

The previous prime is 1251413254943. The next prime is 1251413255023. The reversal of 1251413255003 is 3005523141521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1251413255003 - 2⁶ = 1251413254939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1251413255023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21576090575 + ... + 21576090632.

It is an arithmetic number, because the mean of its divisors is an integer number (323641359060).

Almost surely, 2^{1251413255003} is an apocalyptic number.

1251413255003 is a deficient number, since it is larger than the sum of its proper divisors (43152181237).

1251413255003 is an equidigital number, since it uses as much as digits as its factorization.

1251413255003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43152181236.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1251413255003 its reverse (3005523141521), we get a palindrome (4256936396524).

The spelling of 1251413255003 in words is "one trillion, two hundred fifty-one billion, four hundred thirteen million, two hundred fifty-five thousand, three".